Improvement in chimney-tops



M.v S. KAVANAGH.

Chimney Top. NO.113',52'7. v Patented April 11, 1871.

",PETERS, PHOTOJ. THOGEAPHER. WASHINGTON D C II. VI,

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MICHAEL S. KAVANAGH, OF DETROIT, MICHIGAN.

Letters Patent No. 113,527, dated April 11, I871.

IMPROVEMENT IN CHIMNEY-TOPS.

The Schedule referred to in these Letters Patent and making part of the same.

To whom at may concern Be it known that Lllhcinnn S. KAVANAGH, of Detroit, in the county of Wayne and State of -Mic higan, have invented a new and useful Improvement in Chimney-Tops; and I do declare that the following is a true and accurate description thereofireference being bad to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which- Figure l is a perspective view of my device with a portion of the upper flange broken away, and

Figure 2 is a vertical section of the same.

Like letters indicate like parts in each figure.

The nature of this invention relates to the construction of chimney-tops in such a manner that the chimneg will not smoke during the prevalence of winds; an

It consists in the peculiar construction of a top provided with a hood rotated from the wind by a vane.

To the hood is attached a spindle, to the lower part of which is attached a sector inthe plane of a circumferential opening in the top, and from the top and bottom of such opening depend inclined flanges or deflectors, the. whole arranged and operating as more fully hereinafter set forth. i

In the drawing- 7 A represents the top of the'chimney or flue, in the upper part ofwhich is secured a bridge-piece, a.

B is the top'of the chimney, having at'the bottom an inclined flange, b.

c is a similar flange surrounding the top (of the flue.

The top B is secured to the flue by four vertical plates, 0,;leaving a circumferential opening at that point of its height.

I) is a hood or cowl of the form shown, provided with a vaue, lll,'and central spindle d passing down through abridge-piece, e, in the upper part of the top, and stepped in the lower one a.

F is a sector of a cylinder fitting easily inside the top, and is secured to the spindle so as to close onehalf of the opening between the top and flue opposite the wind and below the mouth of the cowl, so that the wind, entering the top, is given an upward direction by the flanges' b c, and finding no exit opposite its entrance, passes on up the top and out of the cowl,'as.

shown by the arrows in the drawing, the plates 0 compelling it to enter. v

The cowl should turn freely to the direction given it by the wind through the vane attached thereto.

That I claim as my invention, and desire to secure by Letters Patent, is-- The construction and arrangement of the chimneytop B, provided with a'hood, D, vane E, spindle d, valve-sector F, bridge-pieces (t e, inclined flanges b c, and plates 0 with relation to each other and the chimney or flue A, substantially as and for the purpose set forth. I

MICHAEL S. KAVANAGH. Witnesses:

H. F. EBERTS, MYRON H. CHURCH. 

